why can't we use threshing to separate a mixture of pulse and peas ? can we use winnowing for the same mixture? which methord will be more convenient?
Answers
Answer:
Winnowing will be more convenient
Answer:
Why should we have to separate various components of a mixture? Give some examples.
Answer: Among various components of a mixture, there are so many substances, which could be harmful or not useful. To eliminate those harmful or useless components, we should separate them.
Example:
(a) Coffee powder is separated from the liquid with a strainer while preparing a coffee.
(b) Stones are picked out by hand from wheat, rice etc.
Q2. What is a winnowing? Where is it used?
Answer: Winnowing is used to separates heavier and lighter components of a mixture by wind or by blowing air. This process is done by the farmers to separate lighter husk particles from heavier seeds of grain.
Q3. How can you separate husk or dirt particles from a given sample of pulses before cooking?
Answer: Husk or dirt particles can be separated by winnowing, being lighter they wall fly away from pulses.
Q4. What is sieving? Where it can be used?
Answer: Sieving is a process by which fine particles are separated from the bigger particles by using sieve.